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Nasal and mid-air voice
I watched jeongyeon's vocal video a lot yesterday and notice she has only been a member twice with a different voice (mature husky) maybe she doesn't have a lot of lines because jeongyeon does not agree to sing like that ... mystery Momo's real voice
itzy has this problem even though ryujin has a deeper voice when she should be singing add (i think she is itzy's weak singer now) so lead rapper is perfect for her